The Cost of Private ADHD Assessments The public is becoming more aware of ADHD thanks to celebrities like Sue Perkins and Nadia Sawalha. However, long NHS waiting times leave some people in a dangerous situation. Some sufferers are required to pay for private treatments. In the UK it is possible http://www.stes.tyc.edu.tw/xoops/modules/profile/userinfo.php?uid=1912979